/* Copyright  2009
   @Author
   Richard Changde Yin            e-mail yinchangde@hotmail.com

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
/**
 * @file  show.h
 *
 * Contains function declarations that deal with the SHOW commands.  These
 * will eventually go away, but for now we split these definitions out into
 * their own header file for easier maintenance
 */
#ifndef __SERVER_SHOW_H__
#define __SERVER_SHOW_H__

#include <sql_list.h>
#include <lex_string.h>
#include <sql_parse.h>

/* Forward declarations */
class String;
class JOIN;
class Session;
struct  st_ha_create_information;
typedef st_ha_create_information HA_CREATE_INFO;
struct  TableList;
class  ST_SCHEMA_TABLE;

typedef struct system_status_var STATUS_VAR;


enum find_files_result {
  FIND_FILES_OK,
  FIND_FILES_OOM,
  FIND_FILES_DIR
};

find_files_result find_files(Session *session, 
                             List<LEX_STRING> *files, const char *db,
                             const char *path, const char *wild, bool dir);


int store_create_info(Session *session, 
                      TableList *table_list, String *packet,
                      HA_CREATE_INFO  *create_info_arg);
bool store_db_create_info(Session *session, const char *dbname, String *buffer,
                          HA_CREATE_INFO *create_info);
bool schema_table_store_record(Session *session, Table *table);

int  get_quote_char_for_identifier(Session *session, 
                                   const char *name,
                                   uint32_t length);

ST_SCHEMA_TABLE *find_schema_table(Session *session, const char* table_name);
ST_SCHEMA_TABLE *get_schema_table(enum enum_schema_tables schema_table_idx);
int  make_schema_select(Session *session,  Select_Lex *sel,
                        enum enum_schema_tables schema_table_idx);
int  sql_schema_table(Session *session, LEX *lex, TableList *table_list);
bool get_schema_tables_result(JOIN *join,
                              enum enum_schema_table_state executed_place);
enum enum_schema_tables get_schema_table_idx(ST_SCHEMA_TABLE *schema_table);

bool sqld_show_open_tables(Session *session,const char *wild);

bool sqld_show_logs(Session *session);

void sqld_list_fields(Session *session,TableList *table, const char *wild);

int  sqld_dump_create_info(Session *session, TableList *table_list, int fd);

bool db_show_create(Session *session, TableList *table_list);

bool sqld_show_create_db(Session *session, char *dbname, 
                         HA_CREATE_INFO *create);

int  sqld_show_status(Session *session);
int  sqld_show_variables(Session *session,const char *wild);
bool sqld_show_storage_engines(Session *session);
bool sqld_show_column_types(Session *session);
void sqld_list_processes(Session *session,const char *user, bool verbose);
void calc_sum_of_all_status(STATUS_VAR *to);

int  add_status_vars(SHOW_VAR *list);
void remove_status_vars(SHOW_VAR *list);
void init_status_vars();
void free_status_vars();
void reset_status_vars();

#endif /* __SERVER_SHOW_H__ */
